Collaboration in design - justification, characteristics and related conceptsPikas, Ergo; Koskela, Lauri; Treldal, Niels; Ballard, Glenn; Liias, Roode24th Annual Conference of the International Group for Lean Construction : Boston, USA, 20-22 July 20162016 / p. 143-152 : ill http://iglc.net/Papers/Details/1270